public override BaseExpression VisitSelector([NotNull] ExpressionParser.SelectorContext context)
{
if (context.DOT() is not null)
{
var baseExpression = Visit(context.selector());
var fieldName = context.identifier().GetText();
return(new FieldSelectorExpression(baseExpression, fieldName));
}
else if (context.LBRACKET() is not null)
{
throw new NotImplementedException();
}
else if (context.functionInvoke() is not null)
{
return(Visit(context.functionInvoke()));
}
else
{
var thingName = context.identifier().GetText();
if (thingName.StartsWith("Year"))
{
throw new NotImplementedException("Year-qualified references not yet implemented.");
}
else if (thingName == "Form8949Code")
{
return(new Form8949CodeReferenceExpression());
}
else if (thingName.StartsWith("Form"))
{
return(new FormReferenceExpression(thingName.Substring(4)));
}
else
{
var fieldName = context.identifier().GetText();
return(new FieldSelectorExpression(new FormReferenceExpression(_environment.CurrentFormName), fieldName));
}
}
}
/// <summary>
/// Visit a parse tree produced by <see cref="ExpressionParser.selector"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitSelector([NotNull] ExpressionParser.SelectorContext context)
{
return(VisitChildren(context));
}
